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???
05/18/06 05:54
Modified:
  05/18/06 05:55
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 		 #116463 - Flash is a little slow...
Responding to: ???'s previous message
Phillip M Gallo said:
Since most parts today, include internal ROM, and implement this with ROM as FLASH, the top end of reliable execution rate most often is attributable to this and not the logic technology or topology. This is why you see many parts move to SRAM for program store.

regards,
p

That's an excellent point. And for that matter, a lot of large/high performance embedded systems (32-bit, etc.) come up with the microcontroller running slowly (slow clock, bus cycle stretching, etc.). Then, they copy the contents of their flash store to RAM, decompressing it if necessary, and begin executing out of RAM, at which point the processor begins executing at full speed... all because full speed execution straight out of flash isn't possible.

--Sasha Jevtic

List of 35 messages in thread
TopicAuthorDate
8052 overclocking            01/01/70 00:00      
   The absolutely complete answer is            01/01/70 00:00      
      its a definate maybe            01/01/70 00:00      
      Ideas...            01/01/70 00:00      
   Guarantees            01/01/70 00:00      
      i think Jeroen is an amateur            01/01/70 00:00      
   Even PC Overclockers know....            01/01/70 00:00      
      but PC overclockers also know            01/01/70 00:00      
         buying a 40MHz XTAL?            01/01/70 00:00      
         So get a faster one.            01/01/70 00:00      
         no need for overclocking !            01/01/70 00:00      
            more global            01/01/70 00:00      
            how to program            01/01/70 00:00      
               on programming tools, clocks and other            01/01/70 00:00      
               bootloader devices            01/01/70 00:00      
                  don't forget the Dallas devices            01/01/70 00:00      
         that's not quite true ... sadly enough            01/01/70 00:00      
   Entertaiment            01/01/70 00:00      
      Can you post that schematic?            01/01/70 00:00      
      How much performance did you squeeze out            01/01/70 00:00      
   Over-52-ing            01/01/70 00:00      
      yes well critical paths            01/01/70 00:00      
      Flash is a little slow...            01/01/70 00:00      
         well, it "is" possible            01/01/70 00:00      
            wide/interleaved FLASH            01/01/70 00:00      
               caching            01/01/70 00:00      
                  no cache, but prefetch            01/01/70 00:00      
                     the difference            01/01/70 00:00      
                        this is how your childhood is dying            01/01/70 00:00      
                           the 2 meanings            01/01/70 00:00      
   many devices do not need a "programming            01/01/70 00:00      
   Re: 8051 o/clock...            01/01/70 00:00      
      gobbelygook            01/01/70 00:00      
         working like crazy :-)))            01/01/70 00:00      
            I under clocked once...            01/01/70 00:00      

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